http://lkml.org/lkml/2010/7/22/252 is a fun post on the Linux-Kernel list about missing caching of ACPI tables leading to 20 minute boot times. I get that problem every day! (I wish
It is a pretty safe bet that you don't have to worry about Linux and more than 48 cores, as it is the OS of choice for a lot of the top supercomputers and OS research in general. Of course, applications which can take advantage of such systems is another problem, but that is hardly a Linux problem.
(All the examples are real life examples, often quite important ones as well.)
Just that makes this pretty big news I think..
I've traveled in China several times, and as a "rich white guy" you won't have serious problems even if you make loud political statements that the party disagrees with. (E.g. here is a short list of forbidden words).
What you should be careful about is discussing politics with the locals. At worst you'll be asked to leave the country, but they can be thrown in jail or "disappeared" if they say, criticize party leaders.
In other words, using a ssh proxy is fine. There is probably even no law against it, except for the general "don't do things not in the interest of the Party".
Serving coffee on aircraft causes turbulence.